Results 121 to 130 of about 5,309,030 (392)
Proceedings of the Combustion Institute, 2015 AbstractCombustion noise is becoming increasingly important as a major noise source in aeroengines and ground based gas turbines. This is partially because advances in design have reduced the other noise sources, and partially because next generation combustion modes burn more unsteadily, resulting in increased external noise from the combustion.
Dowling, Ann P., Mahmoudi, Yasser
openaire +3 more sources
Scientific ReportsThe operational characteristics of Electro-Hydraulic Actuator(EHA) result in the EHA internal pump facing complex conditions of variable speed, pressure and even direction, resulting in poor lubrication state of friction pairs.
Yantao Zhang +3 more
doaj +1 more source
Genre as noise: noise in genre [PDF]
International Journal of Document Analysis and Recognition (IJDAR), 2007 Given a specific information need, documents of the wrong genre can be considered as noise. From this perspective, genre classification helps to separate relevant documents from noise. Orthographic errors represent a second, finer notion of noise. Since specific genres often include documents with many errors, an interesting question is whether this ...
Christoph Ringlstetter +2 more
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STOCHASTIC DYNAMICS OF CELL LINEAGE IN TISSUE HOMEOSTASIS. [PDF]
, 2019 During epithelium tissue maintenance, lineages of cells differentiate and proliferate in a coordinated way to provide the desirable size and spatial organization of different types of cells.
Chen, Weitao, Nie, Qing, Qiu, Yuchi
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Array enhanced stochastic resonance and spatially correlated noises [PDF]
arXiv, 2003 We discuss the role of spatial correlations of the noise in the array enhanced stochastic resonance. We show numerically that the noises with negative correlations between different sites lead to significantly larger values of the signal-to-noise ratio than the uncorrelated noises or noises with positive correlations. If the noise is global, the system
arxiv
Investigation and Evaluation of Adaptive Algorithms for Multichannel Active Noise Control System [PDF]
arXiv, 2023 This dissertation focuses on the investigation and evaluation of adptive algorithms for multichannel active noise control system. The aim of the research is to investigate the effectiveness of the FxLMS algorithm and the pre-trained control filter in attenuating various types of noise.
arxiv
Increase in signal-to-noise ratio of > 10,000 times in liquid-state NMR
Proceedings of the National Academy of Sciences of the United States of America, 2003 A method for obtaining strongly polarized nuclear spins in solution has been developed. The method uses low temperature, high magnetic field, and dynamic nuclear polarization (DNP) to strongly polarize nuclear spins in the solid state.
J. Ardenkjær-Larsen +8 more
semanticscholar +1 more source
Design of a Low Noise Amplifier [PDF]
arXiv, 2019 A low-noise amplifier (LNA) amplifies a very low-power signal without significantly degrading its signal-to-noise ratio. This paper provides the design of a linear low noise amplifier with the transistor BFP 640 using bilateral approach which is well-matched at the design frequency of 3.20 GHz with maximum transducer gain and low noise figure. Noise is
arxiv
Stiffness analysis and structural optimization design of an air spring for ships
Scientific ReportsAn air spring (AS) for ships must have the structural strength of its bellows enhanced considerably to ensure its reliability under high internal pressure and strong impact.
Yuqiang Cheng +3 more
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1/f noise: a pedagogical review [PDF]
arXiv, 2002 This is a pedagogical review of the ubiquitous 1/f^\alpha noises. The sections include the representation of 1/f^\alpha noise as a superposition of many relaxation processes; a discussion of the infinitely large fluctuations in the low frequency limit; 1/f^\alpha noise from diffusion processes; the measured statistical properties of 1/f^\alpha noises ...
arxiv